أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا إِسْمَاعِيلُ، - وَهُوَ ابْنُ أَبِي خَالِدٍ - قَالَ حَدَّثَنِي أَبُو إِسْحَاقَ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عُمَرَ، أَنَّهُ صَلَّى مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم بِجَمْعٍ بِإِقَامَةٍ وَاحِدَةٍ ‏.‏

It was narrated from Salim, from his father, that the Prophet (S.A.W) joined them (Maghrib and 'Isha') in Al-Muzdalifah, and he prayed each of them with an Iqamah, and he did not offer any voluntary prayer before or after either of them.